| Literature DB >> 33436573 |
Cyrielle Fougeroux1, Louise Goksøyr1,2, Manja Idorn3, Vladislav Soroka4, Sebenzile K Myeni5, Robert Dagil2,6, Christoph M Janitzek2, Max Søgaard4, Kara-Lee Aves2, Emma W Horsted2, Sayit Mahmut Erdoğan2,7, Tobias Gustavsson2,6, Jerzy Dorosz4, Stine Clemmensen4, Laurits Fredsgaard2, Susan Thrane1, Elena E Vidal-Calvo6, Paul Khalifé2, Thomas M Hulen2, Swati Choudhary2,6, Michael Theisen2,8, Susheel K Singh2,8, Asier Garcia-Senosiain2,8, Linda Van Oosten9, Gorben Pijlman9, Bettina Hierzberger4, Tanja Domeyer4, Blanka W Nalewajek4, Anette Strøbæk4, Magdalena Skrzypczak4, Laura F Andersson4, Søren Buus10, Anette Stryhn Buus10, Jan Pravsgaard Christensen10, Tim J Dalebout5, Kasper Iversen11, Lene H Harritshøj12, Benjamin Mordmüller13,14, Henrik Ullum11, Line S Reinert3, Willem Adriaan de Jongh1,4, Marjolein Kikkert5, Søren R Paludan3, Thor G Theander2, Morten A Nielsen15, Ali Salanti2,6, Adam F Sander16,17.
Abstract
The rapid development of a SARS-CoV-2 vaccine is a global priority. Here, we develop two capsid-like particle (CLP)-based vaccines displaying the receptor-binding domain (RBD) of the SARS-CoV-2 spike protein. RBD antigens are displayed on AP205 CLPs through a split-protein Tag/Catcher, ensuring unidirectional and high-density display of RBD. Both soluble recombinant RBD and RBD displayed on CLPs bind the ACE2 receptor with nanomolar affinity. Mice are vaccinated with soluble RBD or CLP-displayed RBD, formulated in Squalene-Water-Emulsion. The RBD-CLP vaccines induce higher levels of serum anti-spike antibodies than the soluble RBD vaccines. Remarkably, one injection with our lead RBD-CLP vaccine in mice elicits virus neutralization antibody titers comparable to those found in patients that had recovered from COVID-19. Following booster vaccinations, the virus neutralization titers exceed those measured after natural infection, at serum dilutions above 1:10,000. Thus, the RBD-CLP vaccine is a highly promising candidate for preventing COVID-19.Entities:
Year: 2021 PMID: 33436573 DOI: 10.1038/s41467-020-20251-8
Source DB: PubMed Journal: Nat Commun ISSN: 2041-1723 Impact factor: 14.919